CN104862611B - Cast material for casting wear-resisting centrifugal cylinder and casting technology thereof - Google Patents

Cast material for casting wear-resisting centrifugal cylinder and casting technology thereof Download PDF

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Publication number
CN104862611B
CN104862611B CN201510237777.4A CN201510237777A CN104862611B CN 104862611 B CN104862611 B CN 104862611B CN 201510237777 A CN201510237777 A CN 201510237777A CN 104862611 B CN104862611 B CN 104862611B
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casting
centrifugal cylinder
carried
cast
temperature
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CN201510237777.4A
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CN104862611A (en
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李献中
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Bandung Henan Province Precision Casting Limited-Liability Co
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Bandung Henan Province Precision Casting Limited-Liability Co
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Abstract

The invention discloses a cast material for casting a wear-resisting centrifugal cylinder and a casting technology thereof. The technology comprises the steps that casting forming and casting sand drying are carried out; casting ingredients are selected; the casting ingredients are loaded into an intermediate-frequency vacuum induction furnace for smelting to form original iron liquid; pretreating agents with Cr as the main material and Ni as the auxiliary material are added, so that casting molten iron meets the requirements of cast material chemical components; first-time inoculation is carried out, and then second-time inoculation is carried out; casting is carried out, and casting temperature is 1350-1450 DEG C; after temperature preservation and cooling, a cast is taken out, then a casting head is removed, and quenching and annealing treatment is carried out; finally, the cast is subjected to shot blasting clearing and machining, a centrifugal cylinder finished product is obtained, and warehouse-in inspection is carried out. The manufactured centrifugal cylinder meets the technical requirement in plasticity and intensity; the wear-resisting performance of the centrifugal cylinder is greatly improved; accordingly, the comprehensive mechanical performance of the centrifugal cylinder is improved, and the service life of the centrifugal cylinder is prolonged.

Description

Founding materialses for casting wear-resistant centrifugal cylinder and its casting technique
Technical field
The present invention relates to metal casting technique field, relate in particular to a kind of casting material for casting wear-resistant centrifugal cylinder Material and its casting technique.
Background technology
Centrifugal cylinder is a kind of circular thin-wall porous member, because use environment is severe, it is to the material for casting centrifugal cylinder Material proposes the special requirement of comparison, and not requiring nothing more than it has higher plasticity and higher intensity, and it is higher to require it to have Wearability, but the comprehensive mechanical performance of the centrifugal cylinder being cast with conventional cast material at present is poor, and plasticity and intensity are poor, resistance to Mill performance is not enough, and at present, the service life of the centrifugal cylinder being cast using conventional founding materialses is 1~2 day, its failure mode Mainly wear and tear, show that the centrifugal cylinder anti-wear performance that common founding materialses are cast is not enough.
Content of the invention
It is an object of the invention to overcoming the defect of above-mentioned prior art, provide kind a kind of for casting wear-resistant centrifugal cylinder Founding materialses and its casting technique.Not only in plasticity and intensity, reach technical requirements, and substantially increase centrifugal cylinder Anti-wear performance, thus improving the comprehensive mechanical performance of centrifugal cylinder, extends the service life of centrifugal cylinder.
For achieving the above object, present invention employs following technical scheme:
A kind of founding materialses for casting wear-resistant centrifugal cylinder, with ferrum as primary raw material, and be equipped with carbon, silicon, manganese, sulfur, phosphorus, Chromium, molybdenum, nickel, copper are auxiliary material, and after preparation, melting and casting forms it is characterised in that each chemical component weight percentage in liquation Number is particularly as follows: c 0.32~0.4%;Si 0.6~0.8%, mn 1.7~2.0%, s < 0.010%, p < 0.02%, cr 1.4~ 1.7%, ni 0.9~1.1%, mo 0.6~0.8%, cu 2.0~3.0%, balance of fe.
As the improvement to technique scheme, in the above-mentioned founding materialses for casting wear-resistant centrifugal cylinder, each chemistry becomes Percetage by weight is divided to be specially c 0.36%;si 0.7%, mn 1.8%, s<0.010%, p<0.02%, cr 1.5%, ni 1.0%, mo 0.7%, cu 2.5%, balance of fe.
The present invention provides the casting technique of the founding materialses casting wear-resistant centrifugal cylinder using the present invention, this founder in the lump The step of skill is:
(1), casting mold is made for Modeling Material with molding sand and core sand, before making casting mold, first by the molding sand in Modeling Material It is placed in baker and dried;
(2), select casting dispensing, including foundry return, iron filings and steel scrap, and casting dispensing is carried out flame baking, described Steel scrap is carbon steel or mild steel, and described iron filings are cast iron waste material;
(3), the foundry return in the casting dispensing after flame baking, iron filings and steel scrap are sequentially loaded into intermediate frequency vaccum sensitive stove Middle melting is original iron melt, loads and successively adds in electric furnace according to the lower principle tightly going up pine during casting dispensing, and smelting temperature is 1450 DEG C, and adding copper in original iron melt, the chemical component weight percent making copper is 2.0~3.0%;Incrementally increase in fusion process Circuit power, and often carry out smashing material operation;
(4), the original iron melt in step (3) adds the pretreating agent based on cr, supplemented by ni before coming out of the stove into electric furnace, makes The molten casting iron chemical component weight percent that meets be: c 0.32~0.4%;Si 0.6~0.8%, mn 1.7~2.0%, s < 0.010%, p < 0.02%, cr 1.4~1.7%, ni 0.9~1.1%, mo 0.6~0.8%;Cu 2.0~3.0%;
(5) inovulant is added to carry out first time inoculation in the original iron melt after, skimming in step (4), subsequently will be former Iron liquid is poured in cup, and adds sulfur oxygen inovulant to carry out second inoculation in cup, inoculation knot twice Perlite slag making is dispensed on original iron melt to purify original iron melt and to skim at once after bundle again;
(6), the original iron melt after skimming in step (5) is stood in cup and make in step (1) after a period of time Casting mold in pour into a mould, pouring temperature be 1350~1450 DEG C;
(7), take out foundry goods after insulation cooling, then remove dead head, obtained foundry goods is carried out 650 DEG C successively and quenches Fire, is incubated 3 hours, and temperature is raised to 1020 DEG C and is incubated 2 hours, and temperature is air cooled to room temperature, then after dropping to 980 DEG C of insulations 8 hours Tempered 480 DEG C of insulations were air cooled to room temperature after 10 hours, and its heating rate is all 50 DEG C/h;
(8), the foundry goods after processing in step (7) is obtained centrifugal cylinder finished product through blast cleaning and machining, and check Warehouse-in.
Compared with prior art, the invention has the beneficial effects as follows:
Choose the founding materialses for casting wear-resistant centrifugal cylinder of the present invention and coordinate casting technique provided by the present invention, The service life of obtained centrifugal cylinder brought up to 4~5 days from original 1~2 day, and centrifugal cylinder not only reaches in plasticity and intensity Arriving technical requirements, and substantially increased the anti-wear performance of centrifugal cylinder, thus improving the comprehensive mechanical performance of centrifugal cylinder, having extended The service life of centrifugal cylinder.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment pair The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and It is not used in restriction invention.
Embodiment one
(1), casting mold is made for Modeling Material with molding sand and core sand, before making casting mold, first by the molding sand in Modeling Material It is placed in baker and dried;
(2), select casting dispensing, including foundry return, iron filings and steel scrap, and casting dispensing is carried out flame baking, described Steel scrap is carbon steel or mild steel, and described iron filings are cast iron waste material;
(3), the foundry return in the casting dispensing after flame baking, iron filings and steel scrap are sequentially loaded into intermediate frequency vaccum sensitive stove Middle melting is original iron melt, loads and successively adds in electric furnace according to the lower principle tightly going up pine during casting dispensing, and smelting temperature is 1450 DEG C, and adding copper in original iron melt, the chemical component weight percent making copper is 2.0%;Circuit work(is incrementally increased in fusion process Rate, and often carry out smashing material operation;
(4), the original iron melt in step (3) adds the pretreating agent based on cr, supplemented by ni before coming out of the stove into electric furnace, makes The molten casting iron chemical component weight percent that meets be: c 0.32%;Si 0.6%, mn 1.7~2.0%, s < 0.010%, p <0.02%, cr 1.4%, ni 0.9%, mo 0.6%;cu 2.0%;
(5) inovulant is added to carry out first time inoculation in the original iron melt after, skimming in step (4), subsequently will be former Iron liquid is poured in cup, and adds sulfur oxygen inovulant to carry out second inoculation in cup, inoculation knot twice Perlite slag making is dispensed on original iron melt to purify original iron melt and to skim at once after bundle again;
(6), the original iron melt after skimming in step (5) is stood in cup and make in step (1) after a period of time Casting mold in pour into a mould, pouring temperature be 1350 DEG C;
(7), take out foundry goods after insulation cooling, then remove dead head, obtained foundry goods is carried out 650 DEG C successively and quenches Fire, is incubated 3 hours, and temperature is raised to 1020 DEG C and is incubated 2 hours, and temperature is air cooled to room temperature, then after dropping to 980 DEG C of insulations 8 hours Tempered 480 DEG C of insulations were air cooled to room temperature after 10 hours, and its heating rate is all 50 DEG C/h;
(8), the foundry goods after processing in step (7) is obtained centrifugal cylinder finished product through blast cleaning and machining, and check Warehouse-in.
Embodiment two:
(1), casting mold is made for Modeling Material with molding sand and core sand, before making casting mold, first by the molding sand in Modeling Material It is placed in baker and dried;
(2), select casting dispensing, including foundry return, iron filings and steel scrap, and casting dispensing is carried out flame baking, described Steel scrap is carbon steel or mild steel, and described iron filings are cast iron waste material;
(3), the foundry return in the casting dispensing after flame baking, iron filings and steel scrap are sequentially loaded into intermediate frequency vaccum sensitive stove Middle melting is original iron melt, loads and successively adds in electric furnace according to the lower principle tightly going up pine during casting dispensing, and smelting temperature is 1450 DEG C, and adding copper in original iron melt, the chemical component weight percent making copper is 3.0%;Circuit work(is incrementally increased in fusion process Rate, and often carry out smashing material operation;
(4), the original iron melt in step (3) adds the pretreating agent based on cr, supplemented by ni before coming out of the stove into electric furnace, makes The molten casting iron chemical component weight percent that meets be: c 0.4%;si 0.8%, mn 2.0%, s<0.010%, p< 0.02%, cr 1.7%, ni 1.1%, mo 0.8%;cu 3.0%;
(5) inovulant is added to carry out first time inoculation in the original iron melt after, skimming in step (4), subsequently will be former Iron liquid is poured in cup, and adds sulfur oxygen inovulant to carry out second inoculation in cup, inoculation knot twice Perlite slag making is dispensed on original iron melt to purify original iron melt and to skim at once after bundle again;
(6), the original iron melt after skimming in step (5) is stood in cup and make in step (1) after a period of time Casting mold in pour into a mould, pouring temperature be 1450 DEG C;
(7), take out foundry goods after insulation cooling, then remove dead head, obtained foundry goods is carried out 650 DEG C successively and quenches Fire, is incubated 3 hours, and temperature is raised to 1020 DEG C and is incubated 2 hours, and temperature is air cooled to room temperature, then after dropping to 980 DEG C of insulations 8 hours Tempered 480 DEG C of insulations were air cooled to room temperature after 10 hours, and its heating rate is all 50 DEG C/h;
(8), the foundry goods after processing in step (7) is obtained centrifugal cylinder finished product through blast cleaning and machining, and check Warehouse-in.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.

Claims (1)

1. a kind of casting technique of casting wear-resistant centrifugal cylinder it is characterised in that: with ferrum as primary raw material, and be equipped with carbon, silicon, manganese, Sulfur, phosphorus, chromium, molybdenum, nickel, copper are auxiliary material, and after preparation, melting and casting forms it is characterised in that each chemical composition weight in liquation Amount percent is particularly as follows: c 0.32~0.4%;Si 0.6~0.8%, mn 1.7~2.0%, s < 0.010%, p < 0.02%, cr 1.4~1.7%, ni 0.9~1.1%, mo 0.6~0.8%, cu 2.0~3.0%, balance of fe;
The step of this casting technique is:
(1), casting mold is made for Modeling Material with molding sand and core sand, before making casting mold, first the molding sand in Modeling Material is placed in Dried in baker;
(2), select casting dispensing, including foundry return, iron filings and steel scrap, and casting dispensing is carried out flame baking, described steel scrap For carbon steel or mild steel, described iron filings are cast iron waste material;
(3), the foundry return in the casting dispensing after flame baking, iron filings and steel scrap are sequentially loaded in intermediate frequency vaccum sensitive stove and melt Refine as original iron melt, load and successively add in electric furnace according to the lower principle tightly go up pine during casting dispensing, smelting temperature is 1450 DEG C, and Add copper in original iron melt, the chemical component weight percent making copper is 2.0~3.0%;Circuit work(is incrementally increased in fusion process Rate, and often carry out smashing material operation;
(4), the original iron melt in step (3) adds the pretreating agent based on cr, supplemented by ni before coming out of the stove into electric furnace, is allowed to accord with Molten iron chemical composition percetage by weight is made in alloying: c 0.32~0.4%;Si 0.6~0.8%, mn 1.7~2.0%, s < 0.010%, p < 0.02%, cr 1.4~1.7%, ni 0.9~1.1%, mo 0.6~0.8%;Cu 2.0~3.0%;
(5) inovulant is added to carry out first time inoculation, subsequently by original iron melt in the original iron melt after, skimming in step (4) Pour in cup, and add sulfur oxygen inovulant to carry out second inoculation, after inoculation terminates twice in cup Perlite slag making is dispensed on original iron melt to purify original iron melt and to skim at once again;
(6), the original iron melt after skimming in step (5) is stood the casting made in step (1) after a period of time in cup Pour into a mould in type, pouring temperature is 1350~1450 DEG C;
(7), take out foundry goods after insulation cooling, then remove dead head, obtained foundry goods is carried out successively 650 DEG C of quenchings, protect Temperature 3 hours, temperature is raised to 1020 DEG C and is incubated 2 hours, and temperature is air cooled to room temperature after dropping to 980 DEG C of insulations 8 hours, then tempered 480 DEG C insulation 10 hours after be air cooled to room temperature, its heating rate is all 50 DEG C/h;
(8), the foundry goods after processing in step (7) is obtained centrifugal cylinder finished product through blast cleaning and machining, and check warehouse-in.
CN201510237777.4A 2015-05-12 2015-05-12 Cast material for casting wear-resisting centrifugal cylinder and casting technology thereof Expired - Fee Related CN104862611B (en)

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CN105803301A (en) * 2016-03-25 2016-07-27 福建省神悦铸造股份有限公司 Shell mold casting process
CN106734895A (en) * 2016-12-21 2017-05-31 重庆市合川区银窝铸造厂 Casting technique for casting motorcycle wearing piece
CN107716854A (en) * 2017-09-01 2018-02-23 东风精密铸造安徽有限公司 A kind of metal craft dry sand mold casting operation technique
CN111215577A (en) * 2019-11-26 2020-06-02 山西晋武能源有限公司 Production process of stirring pot before molding of cast briquette
CN112536420A (en) * 2020-11-19 2021-03-23 湖北恩腾机械有限公司 Preparation process of eccentric casting wear-resistant bent pipe

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Publication number Priority date Publication date Assignee Title
CN1175980A (en) * 1995-01-20 1998-03-11 英国钢铁公司 Improvements in and relating to cartide-free bainitic steels and method of producing such steels
CN1361306A (en) * 2000-12-29 2002-07-31 天津钢管公司 Petroleum casing resisting stress corrosion of H2S and its production process
CN101864546A (en) * 2010-06-07 2010-10-20 景辉 High heat-resistance abrasion-resistance alloy roller

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Publication number Priority date Publication date Assignee Title
JPH064889B2 (en) * 1983-01-14 1994-01-19 新日本製鐵株式会社 Method for manufacturing thick ultra high strength steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1175980A (en) * 1995-01-20 1998-03-11 英国钢铁公司 Improvements in and relating to cartide-free bainitic steels and method of producing such steels
CN1361306A (en) * 2000-12-29 2002-07-31 天津钢管公司 Petroleum casing resisting stress corrosion of H2S and its production process
CN101864546A (en) * 2010-06-07 2010-10-20 景辉 High heat-resistance abrasion-resistance alloy roller

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